From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
For LE Secure Connections we want to trigger cross transport key
generation only if a new link key was actually created during the BR/EDR
connection. This patch adds a new flag to track this information.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/hci_event.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 90929641d0f0..42f9362a83c1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -559,6 +559,7 @@ enum {
HCI_CONN_AUTH_INITIATOR,
HCI_CONN_DROP,
HCI_CONN_PARAM_REMOVAL_PEND,
+ HCI_CONN_NEW_LINK_KEY,
};
static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 34ecbf0b7e5b..c3d6390e3b7b 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3249,6 +3249,8 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
if (conn) {
+ clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
+
if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
@@ -3301,6 +3303,7 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
conn->disc_timeout = HCI_DISCONN_TIMEOUT;
hci_conn_drop(conn);
+ set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
conn_set_key(conn, ev->key_type, conn->pin_length);
if (!test_bit(HCI_MGMT, &hdev->dev_flags))
--
2.1.0
--
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